Embed a file in a PowerShell script

embed.ps1

param (
    [Parameter(Mandatory=$true)][string]$sourceFile,
    [string]$outputFile=""
)

$MAX_LINE_LENGTH = 16000000;

if ($outputFile -eq "") {
    $outputFile = '{0}.ps1' -f ($sourceFile)
}

if ($outputFile -eq $sourceFile) {
    throw "The source and output file are the same.  Cannot proceed as the source file would be overwritten."
}

$bytes = [System.IO.File]::ReadAllBytes($sourceFile);
$b64content = [Convert]::ToBase64String($bytes);
$bytes = $null;

try {
    $outputStream = [System.IO.StreamWriter]::new($outputFile)
    $writtenByteCount = 0;

    $outputStream.Write('$content = ( #{0}{1}' -f (" this array contains the bytes of $sourceFile", "`n"));

    while ($writtenByteCount -lt $b64content.Length) {
        $take = 0;
        if ($writtenByteCount + $MAX_LINE_LENGTH -lt $b64content.Length) {
            $take = $MAX_LINE_LENGTH
        }
        else {
            $take = $b64content.Length - $writtenByteCount
        }
        $buffer = $b64content.Substring($writtenByteCount, $take);
        $comma = If ($writtenByteCount + $take -lt $b64content.Length) {","} Else {""};
        $outputStream.Write(' "{0}"{1}{2}' -f ($buffer, $comma, "`n"));
        $writtenByteCount += $take;
    }
    $outputStream.Write(');{0}' -f ("`n`n"));
    $outputStream.Write('# Uncomment the below two lines to write out the bytes to $destination.{0}' -f ("`n"));
    $outputStream.Write('#$destination = "{0}"{1}' -f ($sourceFile, "`n"));
    $outputStream.Write('#[System.IO.File]::WriteAllBytes($destination, [Convert]::FromBase64String([String]::Join("",$content)));{0}' -f ("`n"));
}
finally {
    $outputStream.Close()
}